On our site's main navigation we have one item we need to have open up in a new window when clicked.
I found some details about this but do not know enough about coding to execute.
The information i found is:
Opening a primary link in a new tab or window (_blank):-
add following jquery code to your page.tpl.php file in head area
provided that jquery must be run on your machin.
****where #id is your li tag id
I don't know if this is the best way or not. Either way, i wouldn't know how to implement this.